Mayor Eric Garcetti joined Takei at the event and reminded of the time the Voyage of the St. Louis, a boat full of Jewish refugees during the Holocaust, was turned away from the U.S.

"We turn back a boat of Holocaust refugees because somebody suspected or said there were German spies amongst them," Garcetti said. "That's eerily similar to the same language being used today. We can't take Syrians in because there might be somebody from ISIS amongst them."

The Muslim Public Affairs Council said the support its received has been overwhelming.

"That gives us a sense of hope, a sense of pride," Salam Al-Marayati, the president of the Muslim Public Affairs Council said.